// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: >
    `Symbol.toStringTag` property descriptor
info: |
    The initial value of the @@toStringTag property is the String value
    "Generator".

    This property has the attributes { [[Writable]]: false, [[Enumerable]]:
es6id: 25.3.1.5
includes: [propertyHelper.js]
features: [generators, Symbol.toStringTag]
---*/

function Test() {
    var GeneratorPrototype = Object.getPrototypeOf(
      Object.getPrototypeOf(function*() {}())
    );

    assert.sameValue(GeneratorPrototype[Symbol.toStringTag], 'Generator');

    verifyNotEnumerable(GeneratorPrototype, Symbol.toStringTag);
    verifyNotWritable(GeneratorPrototype, Symbol.toStringTag);
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
